Distribution and Solubility of Radionuclides in Waste Forms for Disposition of Plutonium and Spent Nuclear Fuels: Preliminary Results
- BATTELLE (PACIFIC NW LAB)
Uranium, plutonium, and several radionuclide surrogates have been examined in a range of glass wasteform materials by x-ray absorption fine structure (XAFS) to improve the understanding of specific effects of glass melt processing conditions on the speciation of the metal ion. The glass melts have been subject to systematic compositional, radionuclide loading, and oxidation reduction potential variations during processing. The speciation of both uranium and plutonium responds to glass melt processing redox conditions and shows trends with increased radionuclide loading. A comparative investigation of the redox properties of plutonium and cerium, a plutonium surrogate, has been completed in a series of related glass wasteforms. The observed difference in oxidation states between the two metal ions in these wasteform materials has been successfully interpreted from consideration of the melt glass thermodynamics.
- Research Organization:
- Pacific Northwest National Lab., Richland, WA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 15001329
- Report Number(s):
- PNNL-SA-30100; TRN: US0400297
- Journal Information:
- Journal of the American Ceramic Society, Vol. IV, Issue 93; Other Information: PBD: 1 Dec 1998
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ABSORPTION
CERIUM
FINE STRUCTURE
GLASS
NUCLEAR FUELS
OXIDATION
PLUTONIUM
PROCESSING
RADIOISOTOPES
SOLUBILITY
THERMODYNAMICS
URANIUM
VALENCE
WASTE FORMS
BOROSILICATE GLASS
ACTINIDE VALENCES